一种新的三维实时红外尾焰仿真方法

红外尾焰仿真是红外场景仿真的难点之一。采用粒子方法仿真红外尾焰存在二个问题,一是粒子数量庞大,二是很难通过控制粒子实现尾焰的温度场分布。利用尾焰的对称性,提出了一种基于粒子系统的改进算法,将尾焰拆分成横切面与底面二个几何平面,仅在平面内进行粒子填充。同时提出了双层布告板旋转算法,分别旋转粒子与尾焰的切面,使得尾焰能适应不同的观察角度。实验证明,本文算法能大幅度降低粒子数量,提高仿真速度。同时,对粒子的精确控制使得尾焰的温度场分布变得可控,解决了以往基于粒子系统的尾焰仿真温度随机不可控的不足。

A New Way of Real-Time 3D Simulation of Infrared Plume

Infrared plume simulation is a difficult point in real-time scene generation.There are two problems when simulating infrared plume based on particle systems;one is the large amount of particles used,the other is the difficulty in controlling the temperature field.Taking the symmetrical property of a plume into consideration,we present an improved way of real-time simulation of infrared plume,which divides the plume into two surfaces--the longitudinal slice and the base,and fill particles only in these surfa...